HomeAstronomy'Frozen in place' fossils reveal dinosaur-killing asteroid struck in spring

‘Frozen in place’ fossils reveal dinosaur-killing asteroid struck in spring

Spring is a time for budding flowers, tender green leaves and baby animals. But 66 million years ago, that gentle season instead brought mass death and carnage from Earth’s catastrophic impact with a massive space rock.

Earth was forever changed after an enormous asteroid smashed into our planet at the end of the Cretaceous period (145 million to 66 million years ago), triggering a global extinction that wiped out 76% of life on Earth, including all nonavian dinosaurs, pterosaurs and most marine reptiles. Scientists recently pinpointed the season of the disaster and linked it to springtime in the Northern Hemisphere, after analyzing fossilized animals that died minutes after the impact.

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